Door-check.



No'. 836,654. n PATENTED NOV. 20, 1906.

. D. SGHUYLBR.

DOOR GHB APPLICATION FILED ,1900.

2 SHEETS-SHEET 1.

l l Mw PATBNTED Nov. 20, 1900.

D. SGHUYLER. DUUR CHECK.

APPLICATION FILED JUNE 4,1900.

2 SHEETS-SHEET 2- um@ @my w UNITED sTATEs lPATENT oEEIoE.

DANIEL SCHUYLER, OF LOS ANGELES, CALIFORNIA, ASSIGNOR TO THE PERFECT SLIDING DOOR COMPANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

Doon-CHECK.

Specification of Letters Patent.

Patented Nov. 2o, 190e.

Application filed June 4, 1900. SeriaiNo. 19,072.

To @ZZ 'wh/0m, t nba/y concern:

Be it known that I, DANIEL SCHUYLER, a citizen of the United States, formerly of San Diego, California, now of Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Door- Checl, of which the following is a specification.

The object of my present invention is to provide mechanical means for checking a door at its final closing movement and taking up the rebound, if any, of the door after closing and to obtain substantially the same effect as that obtained by the use of pneumatic door-checks.

This invention comprises a spring-controlled door-check constructed to offer gradually-decreasing resistance as the momentum of the door decreases.

This invention includes a door-check comprising two parts connected with a moving door and with a support, respectively, and constructed and arranged to have contact with each other at a point moving along a definite line, Iand one of said members being yieldingly supported and extending across said line obliquely from the point of support in the direction toward which the point of contact moves at the close of that Inovement of the door which is 'to be checked, whereby the leverage for overcoming the resistance of the yielding member increases as the momentum of the door decreases, and the effect heretofore obtained with pneumatic door-checks by compression and escape of air is secured by mechanical means.

The yieldingly-supported member may be an arm to extend along the path of a part pertaining to the door, and yielding means may be provided for normally holding such arm obliquely across the path of such part.

The yielding means may be of any suitable construction. It may be a metallic or other spring, or it may be a pneumatic cushion with a restricted escape-passage for the air, or it may be a weight. The pivoted checking-arm, with said yielding means, may be either attached to the moving-door or to the stationary structure at the pleasure of the constructor. If applied to the door, and thus made a part of the door, the checkingarm. will engage with a stationary part fixed to the stationary structure of the door; but

I prefer to attach the yielding checking-arm to the stationary door structure, and I prefer that the part which engages with the checking-arm when the door closes shall be a proj ection, preferably a roller carried by the door, and in order to take up the rebound of the door the checking-arm is bent at its free end, and the parts are relatively proportioned so that when the door is stopped by the door-jamb or other stop the projection will have passed the bend of the arm and will be in contact with the portion of the arm beyond such bend, thereby to apply the force of the spring to hold the door closed.

My invention can be constructed in many different ways and may be applied on swinging doors and also on sliding doors.

This invention is not limited 'to any speciiic construction. The yielding part may be stationary or may move with the door, and the part which contacts with the oblique yielding part may be either a part of the door or a part of some other object.

In the accompanying drawings I have not attempted to show the many different forms in which my invention may be applied; but I have shown. one of the forms in'which the yielding means for operating the checkingarm consists in a V-shape spring and one of the forms in which a pneumatic bulb having an adjustable restricted air-outlet is applied to hold the checking-arm obliquely across the path of a moving part pertaining to the door. I have also shown a form of doorcheck in which the attaching member and the checking-arm carried thereby are formed of a single piece.

It is to be understood that the checkingarm may be made straight without departing from the spirit of my invention, although it is preferred that it should have a bend in its engaging face for the purposes hereinbefore stated.

It is an obj ect of my invention to provide and one which can be applied with the least expense of time and labor.

Another object of my invention is to furnish sliding doors with a concealed doorcheck and to enable the workman to apply and remove the same with a minimum expense of time and labor.

Another object of my invention is to afford a door-check of the slightest possible cost IOO IOS

' tions of the checking-arm are shown.

very cheap and simple means for accurately adjusting the resistance which the checkingarm will afford to the closing door.

The accompanying drawings illustrate my invention.

Figure I is a sectional elevation of a preferred form of my invention applied to a sliding door. Line I I, Fig. II, indicates the line of section. In this iigure three posi- Position l in dotted lines shows the arm ready to receive the moving part of the door which is to engage it. Dotted position 2 shows the parts just before the final movement of the closing door. Position 3 in solid lines shows the arm when the door is fully closed. Fig. II is a view of the face of the door-j amb with check inserted and the face-plate removed. Fig. III shows the checking appliance b efore it is assembled. The checking-arm, its attaching member, and the spring and the two pivots which go to make up the checking appliance are shown detached from each other. The spring is shown in the contracted position in which it is normally held by the attaching member and checking-arm. Dotted lines indicate the relaxed position of the spring. Fig. IV is a sectional elevation of the checking appliance provided with a pneumatic bulb having an adjustable restricted air-passage. Fig. V is a plan of the checking ap liance. Fig. VI shows a checking-arm andp its attaching member formed of one piece and a grooved wheel to engage the checking-arm.

a indicates a pivoted checking-arm having a sinuous contacting face to extend along the path of a roller b, which is connected with a sliding door Z by an arm c. In the form shown the arm cis applied to the edge of the sliding door, a fragment only of which door is shown.

It is to be understood that I do not limit myself to any particular place for mounting the roller.

e indicates a V-shape spring for normally' holding the checking-arm obliquely across `the path of the roller b.

The checking-arm a is pivoted by pivots f to an attaching member g, which is shown attached to the door-post h, against which the door closes. Preferably the arm al is bent, being reversely curved, as at a', at its free end, so that when the'part b comes into contact with the bend a the spring e will be at its greatest tension, and as the part b moves on toward the extreme end of the checking-arm the tension of the spring will be somewhat relieved and the action of the checking-arm is reversedv to throw the part b toward the free end of the arm, thus to draw the door into and hold it in its closed position, The

vspring device or checking-arm a projects or extends obliquely across the path of relative movement of said device and engaging device b and beyond the fulcrum or pivotal point of the spring device, so that the engaging device b iirst passes such pivotal point and then engages with device a, and passing along the same it exerts a progressively-increasing leverage thereon, due to increase of distance of the engaging point from the ful crum. I thus provide a resistance to the movement of the device which progressively decreases as the momentum of the door decreases. The door-post 7L forms the ,stop for stopping the door after the roller has passed the bend a of the arm and before it has reached the extreme end of the arm.

Preferably the attaching member g is made of sheet metal in the form of a plate, supporting edges 4 of said plate extending laterally beyond the planes of pivot-lugs 5, which are formed at the end of the plate by bending a portion of the plate at right angles to the main body thereof. The extreme front end of the plate beyond the pivot-lugs 5 is bent to form an attaching wing or lug 6, which is provided with a perforation 7, through which to insert a screw i to fasten the attaching-plate to the door-post h.

In practice in applying the checking appliance to the door-post the door-post is provided with a mortise j of sufficient size to admit the body of the attaching member g and the body of the checking-arm a when the free end of the checking-armis brought close to the body of the attaching member, as shown by dotted position 2 in Fig. I. At the top of the mortise j laterally-extending channels j', formed by saw-kerfs are cut to receive and retain the projecting edges 4 of the body of the plate g. To attach the member, it is inserted into the post with the projecting edges 4 in the saW-kerfs j', and the projecting wing or lug 6 will be seated in a seat ZC, cut in the door-post for that purpose.

m indicates a face-plate which covers the wing 6 and the pivoted end of the checking- `arm and is provided with an opening m to admit the roller b. It is fastened in place by the screws i and i. The platewhich forms the body or attaching member g is provided with a plurality of holes 8, extending along said body, and the ends of the V-spring e are bent, as at 9, to form catches to catchin the holes 8, thus to adjust the location ofthe spring e with relation to the pivot When the` spring is moved toward the free end of the arm, the resistance of the arm is increased. When the spring is moved toward the pivot, the resistance of the arm is decreased.

The arm a is preferably formed of sheet metal pressed into form, with upturned edges 10 in order to strengthen the arm and also to form a channel in which one of the limbs c of the spring is seated.

IOO

ITO

Preferably the metallic spring is formed of a single piece of spring-wire bent into a loop member or limb e, then bent to form the coil-springs e, and the wire is extended in two limbs e, which terminate in the hooks 9 to enter the holes 8 in the body of the attaching-plate g. When the parts are assembled and the spring is in place, the upturned edges 10 of the arm a and the hooks 9 inserted in the holes S hold the spring securely in place.

In theform shown in Fig. IV n indicates a pneumatic bulb, made of rubber or any other material suitable for the purpose, and said bulb is inserted between the attaching member g and the checking-arm @Wand is provided with an air-nozzle 0, which may be constructed in any desirable manner and may be or may not be adjustable 4to increase and decrease the air-passage, thus to adjust the resistance which will be offered to the door.

Numerous means for making the air-passage more or less restricted are known to the art and no description here is required.

In the drawings the checking-arm. a is shown provided with a weight a/ to return the arm a, quickly to its checking position when the roller (not shown in Fig. IV) is withdrawn..

In Fig. IV the bulb n is shown as constructed oit rubber. The resiliency of the rubber causes the inflow of air through nozzle 0 when the arm a has fallen into its position shown in the drawings.

The attaching-plates gand g are each preferably provided with an embossed ridge 11 for additional strength.

In Fig. I, p indicates the top casing or molding of the door-frame, which in actual practice will extend below the level of the roller b, so that the door-check is hidden from ordinary view.

Q indicates extensions of the pivoted end of the checking-arm to form stops to prevent the free end of the arm from being thrown too Jfar away from the attaching member g. The extensions or lugs g iit between the pivot-lugs 5 of the attaching member g and engage said member. The edge of each extension g is preferably formed in an obtuse angle, as shown, to forni stops for the arm a at the opposite limits of its movement.

r indicates a plate for holding the arm c, which is inserted into the edge of the door d. s indicates screws which hold the plate r in place on the edge of the door.

The top hole t in the face-plate is made to register vwith the hole 7 when the opening m is at the right place tb receive the arm which projects from the door, so that when the checking-arm and its supporting-plate are in position in the mortise and saw kerfs and the face-plate is fastened' in place by a screw i passed through the holes tand 7 and the plate m adjusted to cover the mortise the oplening m will be in the path for the roller w ich is to engage the checking-arm.

The front end of the checking-arm in the forms shown in Figs. I to V is preferably up- \7f turned, as shown at u u. Such upturned part serves as a catch into which a hook (not shown) can be caught in order to withdraw the appliance Jfrom the mortise. It also serves an additional purpose, as at 1N, in holding the nozzle 0 of the air-bulb.

When it is desired to withdraw the appliance from the mortise, the screws 't i and plate m will be removed and a hook caught upon the catch u or u and the appliance can then be readily removed.

In the form shown in Fig. VI the checkingarm a and the attaching member g, which. carries said arm, are formed of a single piece of spring-wire, which is bent into a coil c to yieldingly connect said arm a with the attaching member g and for normally holding the arm away from the supporting member and obliquely across the path of the part pertaining to the door which s to engage the checking-arm. Where a wheel isused with this form, it will preferably be grooved, as indicated by the grooved. wheel b, which is shown in section in Fig. VI, the purpose of the groove being to avoid any liability of the spring sliding from the wheel.

To apply the form shown in Fig. VI, a hole will be bored at an appropriate place in the door-post or door to which the check is to be applied and the arm g, which forms the supporting member, 4will be driven into such hole. The end of the arm g is {lattened to prevent turning.

It is desirable, but not necessary, that the appliance itself be furnished with a stop to prevent the checking-arm from being thrown widely apart from the supporting or attaching member. Such stop may be omitted, as indicated in Fig. VI. In such case the doorpost will form the necessary stop when the appliance is in position. I

Although I prefer to use a roller on the projecting arm, as shown, it is to be understood that an arm without any roller may be used, ii' desired, and that many changes and modifications may be made without departing from the spirit of my invention.

What I claim, and desire to secure by Letters Patent of the United States, is-

1. In a door-check, the combination of a supporting member; a checkin g-arm pivoted to said supporting member and provided with a stop for stopping the arm at an angle to such supporting member, and a spring between said supporting member and arm to normally hold them apart, a plurality of seats beingH provided for adjusting the location of the spring relative to the pivot to increase or diminish its power.

2. In a door-check, the combination of a IOO IID

checkingarm a supporting member by which the checking-arm is carried and provided with lateral extensions projecting beyond the sides of said checking-arm; and

yielding means for holding the free ends or" the arm away from the supporting member.

3. In a door-check; the combination of a plate furnished at one end with projections bent at right angles to said plate to form pivot-lugs, the edges of' said plate projecting laterally beyond the planes of said lugs; a checking-arm formed of sheet metal with upturned edges pivoted to the pivot-lugs; a spring tted between said upturned edges and arranged to throw the free end of the arm away from the attaching member.

4. In a door-check, the combination of an attaching member provided with a plurality of holes extending along said member; a checl ing-arm pivoted to the attaching member; and a V-shape spring bent at the end of one arm to enter the holes to adjust the location ofthe spring relative to the pivot.

5. In a door-check, an attaching member provided with edge extensions; a retainingwing at the end or' the member projecting at one side of such member; a checking-arm carried on the opposite side of the member;

and yielding means for holding the free end of the checking-arm away from the attaching member.

6. A door-check comprising a supporting member; a checking-arm carried by said supporting member; and a spring between said supporting member and arm to normally hold one end of the checking-arm away from the supporting member; a plurality of seats for said spring being provided for adjusting the location of the spring toward and from the moving end of the checkingfarm.

7. A door-check comprising a pivotal springdevice and an engaging device which in the relative movement of the parts passes the pivotal point to engage with said spring device beyond its center of motion7 one of said devices being stationary and the other carried by the door. t

In testimony whereof I have signed my name to this speciiication; in the presence of two subscribing witnesses7 at Los Angeles, California, this 29th day of May, 1900.

DANIEL SCHUYLER.

Witnesses:

JAMES R, TowNsEND, JULIA TowNsEND. 

